Revert of "Speculatively launch Service Workers on mouse/touch events."

third_party/WebKit/Source/platform/RuntimeEnabledFeatures.json5

 {
   // http://dev.chromium.org/blink/runtime-enabled-features
   //
   // This list is used to generate RuntimeEnabledFeatures.h/cpp which contains
   // a class that stores static enablers for all experimental features.
 
   parameters: {
     // Each feature can be assigned a "status":
     // status=stable -> Enable this in all Blink configurations.  We are committed to these APIs indefinitely.
     // status=experimental -> In-progress features, Web Developers might play with, but are not on by default in stable.
@@ skipping 848 matching lines @@
       name: "SlimmingPaintStrictCullRectClipping",
     },
     {
       name: "SlimmingPaintV2",
       implied_by: ["PrintBrowser"],
     },
     {
       name: "smil",
       status: "stable",
     },
-    // Do not turn this flag into stable, because many interfaces that should not
-    // be shipped would be enabled. Instead, remove the flag from the shipping
-    // interface.
-    {
-      name: "SpeculativeLaunchServiceWorker",
-    },
     // Used as argument in attribute of stable-release functions/interfaces where
     // a runtime-enabled feature name is required for correct IDL syntax.
     // This is a global flag; do not change its status.
     {
       name: "StableBlinkFeatures",
       status: "stable",
     },
     {
       name: "StackedCSSPropertyAnimations",
       status: "experimental",
@@ skipping 143 matching lines @@
     {
       name: "Worklet",
       status: "experimental",
     },
     {
       name: "XSLT",
       status: "stable",
     },
   ],
 }